如何在Mongoose模型中定义方法？ [英] How do I define methods in a Mongoose model?

问题描述

我的 locationsModel 档案：

mongoose = require 'mongoose'
threeTaps = require '../modules/threeTaps'

Schema = mongoose.Schema
ObjectId = Schema.ObjectId

LocationSchema =
  latitude: String
  longitude: String
  locationText: String

Location = new Schema LocationSchema

Location.methods.testFunc = (callback) ->
  console.log 'in test'


mongoose.model('Location', Location);

要使用：

myLocation.testFunc {locationText: locationText}, (err, results) ->

但我得到一个错误：

TypeError: Object function model() {
    Model.apply(this, arguments);
  } has no method 'testFunc'

推荐答案

您没有指定是否要查找定义类或实例方法。由于其他人已涵盖实例方法，因此此处如何定义类方法：

You didn't specify whether you were looking to define class or instance methods. Since others have covered instance methods, here's how you'd define a class method:

animalSchema.statics.findByName = function (name, cb) {
    this.find({ 
        name: new RegExp(name, 'i') 
    }, cb);
}

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